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UNITED STATES GARRIOK M. ATHERTON,

PATENT OFFICE.4

OF LONGTON, KANSAS, ASSIGNOR OF ONE-HALF TO FRANKLIN A. DU BOIS.

SPEED-CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 472,598, dated April12, 1892.

Application filed October 8, 189C1. Serial No. A071632. (No model.)

To a/ZZ whom it may concern,.-

Be it known that I, GARRICK M. ATHEETON, a citizen of Longton, in thecounty of Elk and State of Kansas,have invented certain newand usefulImprovements in Speed- Controllers; and I do hereby declare thefollowing to be a full, clear, and exact description of the inven tion,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to an improvement in devices for controlling thespeed of revoluble shafts, the object of the invention being to producea speed-regulator whereby the speed of a revoluble shaft and themechanism connected therewith Will be effectually regulated and saidmechanism made to run at a uniform speed.

With this object in View the invention consists incertain novel featuresof construction and combinations and arrangements of parts, ashereinafter set forth, and pointed out in the claims.

In the accompanying; drawings, Figure l is an end view showing theapplication of my improved speed-regulator to a hoisting mechanism; andFig. 2 is a side view of the mechanism,'showing the regulator insection.

A represents the frame of a windlass, said windlass being provided withgearing adapted to rotate a shaft B, with which my improved regulator orcontroller is connected. It is evident that myimprovements areapplicable to numerous classes .of machinery, and is here shown asapplied to awindlass for convenience of illustration. Secured to one ofthe uprights of the frame A is a plate C, having a laterally-projectingannular flange a, said plate being also made with a central perforationfor the passage of one end of the shaft B. Secured to the end of theshaft B is a crossbar C, having recesses at each end for thereception ofone end of two curved bars D D, which latter are pivotally connected tothe ends of said cross-bar C. The free end of each curved bar D isprovided with a weight E. Each weight E may be made of a block of brassor other metal and provided with a notch b to receive the bar D. A screwc passes through the block and preferably through a recess in the barD,said screw also passing through a nut d, inserted in the end of theblock or weight E. By this means the block or weight E may be secured tothe bars D.

Mounted on each bar D is a collar G, to which a friction-shoe H issecured. The collars G are each provided with a perforation for thereception of a set-screw f, said setscrew also passing through aperforation g in the bar D. Each bar D is preferably provided With aseries of perforations g, whereby the shoes II maybe adjusted nearer toor farther from the free ends of said bars D. It

will be seen from the above-described con-- struction that when theshaft B revolves the friction-shoes H will be made to engage the flangea of the plate O by the centrifugal action of the bars D, and that byadjusting the shoes nearer to or farther from the free ends of said barsthe frictional pressure which they exert on the flange a will beincreased or diminished. The operating parts of the device may beprotected bya cover placed on the flange a.. Springs i are secured atone end to the cross-bar O near the ends of said cross-bar and adaptedat their free ends to bear on the pivoted ends of the curved bars D, andthus prevent the engagement of the shoes I-I with the flange a when thedevice is not in use.

By the use of adevice constructed as above set forth the speed of themachinery to which it is'attached may be regulated and made to run at auniform speed.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a speed-controller, the combination, with a flanged plate and ashaft, of a crossbar on one end of said shaft, springs, a bar pivotallyconnected at one end to the end of said cross-bar, aweight at the end ofsaid pivoted bar, and an adjustable shoe carried by said pivoted bar andadaptedsto engage the flange of said plate, substantially as set forth.

2. In a speed-controller, the combination, with a flanged plate and ashaft, of a crossbar on one end of said shaft, springs, curved barspivoted at each end of said cross-bar and extending in oppositedirections, a weight at the free end of each curved bar, and a shoe IOOsaid block, and a nut in the bleek in which the serew enters, wherebythe bleek or Weight may be clamped to the bar, substantially as setforth.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

AGARRICK M. ATIIERTON.

Witnesses:

G. L. RULE, F. M. ROGERS.

